JPH0349920A - Composite simultaneous molding die - Google Patents

Abstract

PURPOSE:To make a space of the whole of a mold small and prevent missetting of an intermediate mold by making guide pins or guide recessed sections on recessed and projected surface sections of a first mold and recessed and projected surface sections on the second mold side of a third mold all in same shapes. CONSTITUTION:Guide pins 24a - 24d and guide recessed sections 30a - 30d forming the reference are overlapped in the state of separating a fixed mold 10 and a movable mold 12 and an intermediate mold 14 is disposed between said pins and sections, and then the movable side mold 12 is moved toward the fixed mold 10. The guide pins and guide recessed sections provided on the respective recessed and projected surface sections of the mold facing each other are fitted and clamped simultaneously to carry out press processing. After that, the movable mold 12 is moved backward to release the fitted state of the guide pins and guide recessed sections and enable the intermediate mold 14 to move backward between the fixed mold 10 and the movable mold 12. After the intermediate mold is moved backward, the fixed mold and the movable mold are mold clamped and injection molding of molten synthetic resin is carried out between a couple of press processed sheets 32 to be molded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite simultaneous molding mold, and more specifically to a mold having a so-called sand inch structure in which a synthetic resin layer is filled between a pair of metal surface plates. The present invention relates to a composite simultaneous molding mold for molding composite materials.

[Prior Art J] Conventionally, various processing methods have been adopted as a method for forming a composite material in which a synthetic resin layer is filled between two metal surface plates. We proposed a composite simultaneous molding mold in which two sheets to be molded are pressed at the same time in a separated state, and a resin layer is formed between the two wave-formed sheets that are pressed in the separated state. -1
No. 1873).

For example, as shown in FIG. 13, these molding molds are fixed molds that face each other so as to be able to approach and separate from each other, and that work together to form a cavity part f on the opposing surfaces when the molds are in a clamped state. The body a and the movable mold body are arranged between the fixed and movable mold bodies a and b so as to be able to move forward and backward, and can cooperate with the fixed and movable mold bodies a and b to simultaneously clamp the molds. a mold body C, the fixed mold body a and the intermediate mold body C, and the movable mold body and the movable mold body and the opposing surfaces of the intermediate mold body C, respectively, are paired uneven surface parts d, d for press working. At the same time, a holding part e that can move forward and backward to hold each press-formed plate is provided on the uneven surface part d of the fixed mold body a and the movable mold body, and the fixed mold body A and the movable mold body are provided with a hole punch j protruding from the uneven surface portions d and d, and a die k is provided on the uneven surface portion d of the intermediate mold C that faces the hole punch j.
The structure further includes an injection passage g (in this case, provided in the punching bunch and sprue h) for injecting molten resin into the cavity part f. In addition, the code! is a back communication port to the die, n is a hole punch having a recess m for forming a cavity, and 0 is a bunch plate.

In order to mold a composite material with a sandwich structure using a mold configured as described above, first, a fixed mold body a, a movable mold body After setting the mold body A and the intermediate mold body C to face each other, a cover is placed between the fixed mold body a and the intermediate mold body C′ and between the movable mold body A and the intermediate mold body C, respectively. Place molding plates i and i (see FIG. 14(a)). In this state, the fixed mold body a1, the movable mold body C, and the intermediate mold body C are simultaneously clamped, and the plate to be formed 1.1 is pressed in a predetermined manner (Fig. 14(b)).
), next, while holding the press-formed plates i, i and separating the fixed mold body a and the movable mold body, the intermediate mold body C is fixed and the movable mold bodies a, The fixed mold body a is moved backward from between b (see FIG. 14(C)), and the fixed mold body a is
Molten resin is injected and filled into the cavity f formed by clamping the movable mold body and the movable mold body to form a synthetic resin core material layer between the two corrugated molded plates i and 1 and in the recess m of the hole punch n. (see FIG. 14(d)), and then the mold is opened to take out the composite material q (see FIG. 14(l)).

In addition, in the above description, a case has been described in which the fixed mold body a and the movable mold body are provided with hole punches j and n, and the intermediate mold body C is provided with the die k. The same effect can be obtained by providing hole punches j and n in the stationary mold body a and a movable mold body a and a hole punch j and n die k in the fixed mold body a and the movable mold body. Instead, as shown in FIG.
may be provided.

In this type of mold configured as described above, in order to move the movable mold body towards and away from the fixed mold body a, the fixed mold body a is attached as shown in FIG. fixed plate S
A guide bar t has one end fixed to and extends parallel to the moving direction of the movable mold body.

A movable plate U with a movable mold body attached to t... is slidably fitted, and the movable plate U is connected to the piston rod v1 of the cylinder V, and the movable mold body is moved by the expansion and contraction of the cylinder. is moving toward and away from the fixed mold body a. In addition, in order to simultaneously clamp the intermediate mold body C disposed between the fixed mold body a and the movable mold body a, either the fixed mold body a or the movable mold body ( The drawing shows the case of fixed mold body a) and the guide bars 1.1...
Guide pins W, W... are provided that protrude parallel to the
The intermediate mold body C is provided with through holes X, X... through which these guide pins W, W... penetrate, and the movable mold body is also provided with guide pins W, W... Insertion hole y to be inserted.

y... is provided. With this configuration, in order to simultaneously clamp the fixed mold body a, the movable mold body A, and the intermediate mold body C, guide pins W, W, etc. are inserted into the through holes of the intermediate mold body C. X, X... are passed through and inserted into the insertion holes y, y... of the movable mold body.

In addition, in order to inject and fill the molten synthetic resin, as shown in Fig. 12, guide pins W, W... are inserted into the insertion holes y, y... of the movable mold body. This can be done by injecting the molten synthetic resin into the cavity f formed by clamping the fixed mold body a and the movable mold body.

[Problems to be Solved by the Invention] However, in this type of conventional mold, the guide pins W, W... are connected to the through hole X formed in the intermediate mold body C.
, X... and the insertion hole y provided in the movable mold body C, etc.
After clamping the mold for press working with the mold inserted into the cylinder y..., as shown in Fig. 11, the movable mold body is made to stand by at the initial set position by contraction of the cylinder ■, and After retracting the intermediate mold body C from between the fixed mold body a and the movable mold body, the cylinder V is extended and the guide pins W, W... are inserted into the movable mold body. It is necessary to form the cavity part by clamping the mold while being inserted into the holes y, y...

Therefore, in this type of conventional mold, it is necessary to take a long span W from the fixed mold body a to the standby position of the movable mold body a, and therefore, it is necessary to increase the space of the entire mold, and Hole punch j in press working and injection molding state.

It is necessary to make the positional relationship between n and the die highly accurate. Also, in order to solve this problem, guide bar 1.1...
・It is possible to shorten the length, but guide bar 1
．． If the length of 1... is shortened, the thickness of the mold bodies a, b, and c will be restricted and the life of the mold will be shortened, which is a trade-off problem.

Furthermore, in this type of conventional mold, guide bars 1.
In order to penetrate the intermediate mold body C, there is a possibility that the intermediate mold body C is set upside down, and there is also a risk that the mold may be destroyed due to a mistake in setting the intermediate mold body C.

Therefore, the challenge is to develop a composite simultaneous molding mold that can reduce the overall space of the mold without imposing restrictions on the thickness of the mold body, and can prevent mistakes in setting the intermediate mold body.

[Means for Solving the Problems] This invention has been made in view of the above circumstances, and in order to solve the above problems, the composite simultaneous molding molds of the present invention have molds that face each other so as to be able to move toward and away from each other, and that are in contact with each other. A first mold body and a second mold body that move together on opposing surfaces to form a cavity portion when the mold is in a clamped state, and are disposed so as to be movable back and forth between the first and second mold bodies. and a third mold body which can be simultaneously clamped by cooperating with the first and second mold bodies, wherein the first mold body and the third mold body are A pair of uneven surface parts for press working is formed on the opposing surfaces of the mold body No. 3 and the second mold body and the third mold body, respectively, and an upper or lower surface is formed on either one of the opposing surfaces of these uneven surface parts. and/or a plurality of guide pins which are asymmetrical on the left and right sides are provided protrudingly, and guide recesses into which the guide pins are slidably fitted are provided on the other opposing surface, and The guide pin or guide recess in the uneven surface portion and the uneven surface portion on the second mold body side of the third mold body are of the same type.

In this invention, the uneven surface portion may have any shape as long as it is subjected to a predetermined pressing process such as drawing or punching. For example, a convex portion for drawing may be provided on one of the opposing uneven surface portions. , on the other hand, there is a phase into which this convex part can enter,
Hole punching can be performed at the same time as drawing by providing a similarly shaped recess for drawing, or by providing a hole punch on one side of the uneven surface along with these protrusions and recesses, and providing a die for this hole punch on the other side. I can do it.

The number and shape of the guide pins and guide recesses may be arbitrary as long as they are provided asymmetrically on the uneven surface portion vertically and/or horizontally. In this case, the protruding length of the guide pin may be any length as long as it fits into the guide recess when each mold is in the clamped state, but it is preferable to make it as short as possible.

[Work] The above technical means works as follows.

With the fixed mold body and the movable mold body separated from each other, the reference guide pin and guide recess are aligned and the intermediate mold body is placed between them, and then the movable mold body is replaced with the fixed mold body. When the mold bodies are moved toward each other, the guide pins and guide recesses provided on the opposing uneven surfaces of the mold bodies are fitted together and simultaneously clamped to perform press working. After pressing, when the movable mold body is moved backward, the fitted state between the guide pin and the guide recess is released, and the intermediate mold body can be retreated from between the fixed mold body and the movable mold body. . After the intermediate mold body is retracted, the fixed mold body and the movable mold body are clamped together and injection molding of the molten synthetic resin is performed between a pair of press-formed plates.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a schematic side view of an example of a set state of the composite simultaneous molding mold of the present invention.

The mold of the present invention has a first mold body 10 (hereinafter referred to as a fixed mold body) and a second mold body 12 (hereinafter referred to as a movable mold body), these fixed and movable mold bodies 10. 12 and a third mold body 14 (hereinafter referred to as an intermediate mold body) which can be simultaneously clamped.

The fixed mold body 10 is attached to a fixed plate 11 and connected to an injection molding machine (not shown). Further, on the side surface of the movable mold body of the fixed plate 11, there are guide bars Is parallel to each other.
, 15... are provided protrudingly, and these guide bars 1
5. The movable mold body 12 is attached to the side surface of the fixed mold body of the movable plate 13 which is slidably fitted in 15..., and the moving cylinder 16 of the movable mold body 12 is attached to the opposite side. A piston rod 17 is connected. Therefore, the movable mold body 12 is moved from the fixed mold body 1 by the contraction operation of the cylinder 16.
Movement towards and away from 0 is performed.

On the other hand, the intermediate mold body 14 is disposed between the fixed mold body 10 and the movable mold body 12 so as to be movable back and forth manually or via a moving means such as a conveyor.

In the mold of the present invention configured as described above, the facing surfaces of the fixed mold body 10 and the intermediate mold body 14 and the facing surfaces of the movable mold body 12 and the intermediate mold body 14 are each provided with a mold for press working. An uneven surface portion 18 is provided.

The uneven surface portion 18 is formed, for example, by convex portions 20 and 20' for aperture and concave portions 22 and 22°. In this case, the uneven surface portion 18 is formed in a square shape, and four trapezoidal aperture portions 22 are provided at the center of the uneven surface portion 18 of the fixed mold body 10, and guide pins 248 are provided at four locations around the four trapezoidal drawing portions 22.
~24d is provided protrudingly (see FIGS. 2 and 3).

Among these guide pins 24a to 24d, three guide pins 24a, 24b, and 24c (one guide pin 24a is used as a reference guide pin) project from each corner 26 of the uneven surface portion 18 at the same distance, and The guide pins 24d project from each other at the same distance X, and the remaining guide pin 24d projects at a distance Y shorter than the distance X. That is,
In FIG. 2, the dimension X between the reference guide pin 24a located at the upper right and the guide pin 24d located below this reference guide pin 24a is shorter than the dimension Y between the other guide pins, and in the vertical and horizontal directions. It is asymmetrically protruded. Note that an injection passage 28 for injecting molten synthetic resin from an injection molding machine is opened at the center of the drawing recess 22.

A trapezoidal convex portion 20 that can protrude into the trapezoidal concave portion 22 is provided on the uneven surface portion 18 of the intermediate mold body 14 on the fixed mold body side.
is provided protrudingly, and a guide pin 24a is provided around it.
Guide recesses 30a to 30d that can fit with each of the guide recesses 30a to 24d.
(specifically formed by a bushing) is provided (see FIGS. 4 and 5). Further, a trapezoidal convex portion 20 = symmetrical to the convex portion 20 is provided in the center of the uneven surface portion 18 on the opposite side of the intermediate mold body 14, and a trapezoidal convex portion 20 = symmetrical to the convex portion 20 is provided in the peripheral portion thereof. Four guide pins 24a to 24d having the same arrangement and shape as the guide pins 24a to 24d protruding from the uneven surface portion 18 are provided (see FIGS. 6 and 7).

On the other hand, a convex portion 20' provided on the concave-convex surface portion 18 of the intermediate mold body 14 facing the concave-convex surface portion 18 of the movable mold body 12 is
A trapezoidal recess 22- into which a person can enter is provided, and
Guide recesses 30a to 30d into which the guide pins 24a to 24d can fit, respectively, are provided around the periphery (
(See Figures 8 and 9). Therefore, these guide recesses 30a to 30d have the same form as the guide recesses 30a to 30d provided in the uneven surface portion 18 of the intermediate mold body 14, and in the injection molding process, the unevenness of the fixed mold body 10 It can fit into guide pins 24a to 24d provided on the surface portion 18.

In order to mold a composite material with a sandwich structure using the mold of the present invention configured as described above, first, as shown in FIG. In this state, the reference guide pin 24a and the corresponding guide recess 30a are aligned to separate the fixed mold body 10 and the movable mold body 1.
An intermediate mold body 14 is placed between the two. At this time, the guide recess 30a of the double uneven surface portion 18.18 of the intermediate mold body 14
30d and the guide pins 24a to 24d are vertically and horizontally asymmetrical, so there is no risk of setting the intermediate mold body 14 upside down. Next, after disposing the plates 32 and 32 to be formed between the fixed mold body 10 and the intermediate mold body 14 and between the intermediate mold body 14 and the movable mold body 12, the cylinder 16
When the guide pins 24a to 24d are fitted into the guide recesses 30a to 30d, the fixed mold body 10, intermediate mold body 14, and movable mold body 12 are simultaneously clamped (10th (see figure), press working of the plate 32, 32 to be formed is performed. After the press work is completed, the cylinder 16 is contracted to separate the movable mold body 12 from the fixed mold body 10 to release the mold clamping, and the guide pins 24a to 24d are fitted into the guide recesses 30a to 30d. After releasing the mating state, the intermediate mold body 14 is removed from between the fixed mold body 10 and the movable mold body 12.
The cylinder 16 is extended again to fix the fixed mold body 1.
The guide pins 24a to 24d of 0 and the guide recesses 30a to 30d of the movable mold body 12 are fitted together and the molds are clamped to form a space between the uneven surface portions 18° and 18 of the fixed mold body 10 and the movable mold body 12. Molten synthetic resin is injected into the formed cavity from an injection molding machine. After the resin is injected, the cylinder 16 is contracted, and the movable mold body 1 is
2 from the fixed mold body 10 and the guide pin 24
The fittings between a to 24d and guide recesses 30a to 30d are released and the composite material, which is a molded product, is taken out.

In the above embodiment, the guide pins 248 to 24d are provided protrudingly on the uneven surface portion 18 of the fixed mold body 10 and the uneven surface portion 18 on the movable mold body side of the intermediate mold body 14, and Although the case where the guide recesses 30a to 30d are provided in the uneven surface portion 18 of the movable mold body 12 and the uneven surface portion 18 of the movable mold body 12 has been described, it is not necessarily necessary to have such a configuration.
It may be formed in the opposite direction. In addition, in the above embodiment, the case where the number of guide pins 24a to 24d and the guide recesses 30a to 30d are four (pieces) is explained, but the number of guide pins 24a to 24d and the guide recesses 30a to 30d is four (pieces), but the number of guide pins 24a to 24d and the guide recesses 30a to 30d are four (pieces).
It does not have to be 2 or 3 (pieces) or 5 (pieces) or more as long as it is asymmetrical at least in the vertical and/or horizontal directions.

Further, in the above embodiment, the concave and concave portions 22.2 for drawing are provided in the concavo-convex surface portion 18 of the fixed mold body 10 and the concave-convex surface portion 18 of the movable mold body 12.
2'' and a drawing convex portion 20.20° is provided on both uneven surface portions 18.18 of the intermediate mold body 14. may be provided in the opposite direction, or a hole punch and its die may be provided together with the drawing concave portions 22, 22° and the convex portions 20, 20", or furthermore, only the hole punch and die may be provided. The uneven surface portion 18 may also be formed.

[Effects of the Invention] As explained above, since the mold of the present invention is configured as described above, the following effects can be obtained.

1) Guide pins and guide recesses that can fit into each other are formed on the opposing uneven surfaces of the fixed mold body, movable mold body, and intermediate mold body, so that the setting position of the plate to be molded and the injection molding The span between the mold clamping position and the mold clamping position can be shortened, the entire mold apparatus can be made smaller, and the molding work can be shortened.

2) Since the moving distance between the fixed mold body and the movable mold body can be reduced, the accuracy of the mold can be improved.

3) Since there are few restrictions on the thickness of the mold body, it is possible to mold composite materials in a variety of shapes.

4) Since it is only necessary to align one guide pin with one guide recess when setting the intermediate mold body, it is easy to set the intermediate mold body, and setting errors can be prevented.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing an example of the set state of the mold of the present invention, Fig. 2 is a sectional view taken along line II-I in Fig. 1, Fig. 3 is a perspective view thereof, and Fig. 4 is a schematic side view showing an example of the set state of the mold of the present invention. IV-IV sectional view, 5th
The figure is a perspective view, Figure 6 is a sectional view taken along ■-■ of Figure 1, and Figure 7
The figure is a perspective view, Figure 8 is a sectional view taken along ■-■ of Figure 1, and Figure 9 is a cross-sectional view taken along
The figure is a perspective view, Figure 10 is a schematic perspective view showing the mold clamping state, Figure 11 is a schematic side view showing the conventional mold set state, and Figure 12 is the conventional mold clamping state. FIG. 13 is a sectional view showing an example of a composite simultaneous molding die, and FIGS. 14(a) to 14(e) are explanatory views showing the processing procedure of the composite simultaneous molding die. Code explanation (10)...Fixed mold body (first mold body) (12)
...Movable mold body (second mold body) (14)...Intermediate mold body (third mold body) (18)...Uneven surface portion (20, 20°)...Aperture Convex portions (22, 22')...Recesses for drawing (24a-24d)...Guide pins (30a-30d)...Guide recess Patent Applicant: Fuji Xerox Co., Ltd. Agent: Patent attorney Tomohiro Nakamura (2 others) Figure 4 Figure 5 Figure 6 Figure 10 Figure 11 Figure 12 Figure 13

Claims (1)

[Claims] A first surface that faces each other so as to be able to approach and separate and that cooperates with the opposing surfaces to form a cavity portion when the mold is in a clamped state.
The mold body and the second mold body are arranged so as to be movable back and forth between the first and second mold bodies, and work together with the first and second mold bodies to perform simultaneous mold clamping. a possible third mold body, and forming a pair of press working on the opposing surfaces of the first mold body and the third mold body, and the second mold body and the third mold body, respectively. A plurality of guide pins, which are asymmetrical in the vertical and/or horizontal directions, are provided on one of the opposing surfaces of the uneven surface sections, and the guide pins are slidably provided on the other opposing surface. A guide recess that can be freely fitted is provided, and the guide pin or guide recess on the uneven surface portion of the first mold body and the uneven surface portion on the second mold body side of the third mold body are the same. A composite simultaneous molding mold characterized by having a guide pin or a guide recess in the form of a guide pin or a guide recess.